20804956280

素因数分解:

$2^3\times 5^1\times {\mathrm{520123907}}^1$

素因数の和:520123918

約数の個数: 16

約数和(自身を含む): 46811151720

約数和(自身を除く): 26006195440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520123907, 1040247814, 2080495628, 2600619535, 4160991256, 5201239070, 10402478140, 20804956280]

約数ペア:

[(1, 20804956280), (2, 10402478140), (4, 5201239070), (5, 4160991256), (8, 2600619535), (10, 2080495628), (20, 1040247814), (40, 520123907)]